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United States Patent | 5,342,423 |
Taft | August 30, 1994 |
An air filter apparatus for an HVAC system having a frame with a channel area formed therein and having legs extending into the channel area, and a filter material having a portion received within the channel area. The filter material extends across the frame. The legs of the frame extend so as to exert a compressive force on the edges of the filter material received therebetween. The filter material has a first flexible mesh layer, a fibrous layer, and a second flexible mesh layer formed in a sandwiched configuration. The frame has a T-shaped slot extending longitudinally along an outer surface of the frame. The frame also has a notch formed along a corner of the frame and extends around the frame. A bead of an elastomeric material is received within this notch so as to extend outwardly of the frame.
Inventors: | Taft; Andrew A. (P.O. Box 1583, Houston, TX 77251) |
Appl. No.: | 024309 |
Filed: | March 1, 1993 |
Current U.S. Class: | 55/483; 55/485; 55/492; 55/493; 55/495; 55/511; 55/528; 55/DIG.31 |
Intern'l Class: | B01D 046/02 |
Field of Search: | 55/213,483,485,492,493,495,502,511,513,516,525,528,DIG. 31 |
3142550 | Jul., 1964 | Kuehne | 55/495. |
3280538 | Oct., 1966 | Schwarz | 55/502. |
3373546 | Mar., 1968 | Setnan | 55/511. |
4786295 | Nov., 1988 | Newman et al. | 55/213. |
4855047 | Aug., 1989 | Firth | 55/502. |
5037455 | Aug., 1991 | Scheineson et al. | 55/485. |
5059218 | Oct., 1991 | Pick | 55/511. |
5182542 | Jan., 1993 | Adelman et al. | 55/213. |
5196040 | Mar., 1993 | Malloy et al. | 55/511. |